Hereditary influences on adults

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Metrics details. Attachment theory predicts and subsequent empirical research has amply demonstrated that individual variations in patterns of early attachment behaviour are primarily influenced by differences in sensitive responsiveness of caregivers. However, meta-analyses have shown that parenting behaviour accounts for about one third of the variance in attachment security or disorganisation. The exclusively environmental explanation has been challenged by results demonstrating some, albeit inconclusive, evidence of the effect of infant temperament. In this paper, after reviewing briefly the well-demonstrated familial and wider environmental influences, the evidence is reviewed for genetic and gene-environment interaction effects on developing early attachment relationships.
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This page has been archived and is no longer updated. Within the United States, the twentieth century was marked by an overall increase in life expectancy of about six years in both men and women, raising the average life span to 74 years in men and almost 80 years in women. Recently, however, mortality seems to be increasing, and it appears to be doing so at different rates in different areas of the country. For example, counties along the Mississippi River and in Appalachia have shown the most significant decrease in life expectancy.
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Physical Development

Nutritional experiences in early life can have long-lasting consequences. To encourage the adoption of healthy eating habits, this topic explains the usual development of eating habits and how to distinguish common and often temporary eating problems from chronic disorders. Obesity is a global epidemic; its prevalence is increasing 1 and it is developing earlier in childhood. Recent changes to the environment — such as increased opportunity to eat high calorie food and decreased opportunity to be physically active — have undoubtedly played a role.
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THE genetic makeup of a child is a stronger influence on personality than child rearing, according to the first study to examine identical twins reared in different families. The findings shatter a widespread belief among experts and laymen alike in the primacy of family influence and are sure to engender fierce debate. The findings are the first major results to emerge from a longterm project at the University of Minnesota in which, since , more than pairs of twins have gone through six days of extensive testing that has included analysis of blood, brain waves, intelligence and allergies. The results on personality are being reviewed for publication by the Journal of Personality and Social Psychology.
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